24. daniel bought a new car for $15,000. he also paid two fees for the car dealership: • $450 for an extended warranty • $275 for a stereo upgrade in addition, he paid sales tax, which was 8.75% of the total cost, including the purchase price and fees. daniel initially gave the dealership 8% of the total amount, including sales tax, as a down payment. what was the amount of the down payment?

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.

Consider the set of all four-digit positive integers less than 2000 whose digits have a sum of 24. what is the median of this set of integers?

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible